HP HA s Software manual Resources to Monitor for Root Volumes

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Monitoring Disk Resources

Creating Disk Monitoring Requests

Resources to Monitor for Root Volumes

In a high availability system, it is recommended that you mirror your root volume, and have them on separate links in separate PVGs. Note that the root volume should always be ACTIVE. Requests to monitor the root volume might look like this:

		Monitoring Parameters
Resource
Resource	Notify		Condition	Option
	Notify		Condition	Option

/vg/vg00/pv_pvlink/c0t0d0	when value is...	>=	BUSY	REPEAT

/vg/vg00/pv_pvlink/c1t0d0	when value is...	>=	BUSY	REPEAT

/vg/vg00/lv_summary	when value is...	not equal	UP	RETURN

/vg/vg00/lv/copies/lv01	when value is...	<	1	RETURN

If one of the root volumes is unavailable, you are alerted and told which one has failed (pv_pvlink/status). If you lose a root disk mirror, you are alerted. You are also notiﬁed when the mirror is restored.

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Chapter 2

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Contents Using EMS HA Monitors B5735-90001 AugustLegal Notices Contents Monitoring Cluster Resources Monitoring Network InterfacesGlossary TroubleshootingMonitoring System Resources Contents B5735-90001 Printing HistoryPrinting Date Part Number Edition Page Preface PublicationsPage Installing and Using EMS Event Monitoring Services High Availability Monitors What are EMS HA Monitors?Chapter Role of EMS HA Monitors in a High Availability Environment Installing and Removing EMS HA Monitors Installing EMS HA MonitorsRemoving EMS HA Monitors Using EMS HA Monitors Event Monitoring Service Resource Class HierarchyStatus AvailMB PvpvlinkEvent Monitoring Service Screen Selecting a Resource to Monitor ScreenUsing Wildcards Creating a Monitoring Request Monitoring Request ParametersHow Do I Tell EMS When to Send Events? What is a Polling Interval? Which Protocols Can I Use to Send Events?What is a Notiﬁcation Comment? Removing Monitoring Requests Copying Monitoring RequestsModifying Monitoring Requests Conﬁguring MC/ServiceGuard Package Dependencies Service EMSPackage Conﬁguration Screen Package Resource Dependencies Screen Resource Parameters Screen Using EMS HA Monitors Monitoring Disk Resources Monitoring Disk Resources Disk Monitor Reference Disk Monitor Resource Class HierarchyPhysical Volume Summary Interpreting Physical Volume SummaryDisk Monitor Reference Physical Volume and Physical Volume Link Status Interpreting Physical Volume and Physical Volume Link StatusLogical Volume Summary Interpreting Logical Volume SummaryLogical Volume Status Interpreting Logical Volume StatusLogical volume is inactive Logical volume is DOWN, a complete copy of the data is notLogical Volume Number of Copies Interpreting Logical Volume CopiesRules for Using the EMS Disk Monitor with MC/ServiceGuard Rules for Using the EMS Disk Monitor with MC/ServiceGuard Rules for RAID Arrays Pvsummary Calculations Case Conclusion StateCreating Volume Groups on Disk Arrays Using PV Links Adding PVGs to Existing Volume Groups# mkdir /dev/vgdatabase Creating Logical Volumes Rules for Mirrored Individual Disks Creating Disk Monitoring Requests Disk Monitoring Request Suggestions Parameters When Disks Fail Resources to Monitor for RAID Arrays RAID Array ExamplePvgup Return Resources to Monitor for Mirrored Disks Mirrored Disks ExampleMonitoring Parameters Resource Notify Condition Option Resources to Monitor for Lock Disks Example for Interpreting the pvsummary for Mirrored DisksNumber Pvsummary Valid Meaning Value Devices Resource Monitoring Parameters Notify Condition OptionResources to Monitor for Root Volumes Monitoring Cluster Resources Cluster Cluster Monitor ReferenceCluster Monitor Resource Class Hierarchy Cluster Status Interpreting Custer StatusNode Status Interpreting Node StatusPackage Status Interpreting Package StatusCreating Cluster Monitoring Requests Monitoring Network Interfaces Interpreting LAN Interface Status Network Monitor ReferenceNetwork Monitor Resource Class Hierarchy Chapter Net/interfaces/lan/status/LANname When value is Conﬁguring Network Monitoring Requests30 sec HourMonitoring System Resources System Monitor Reference System Resource Monitor Class HierarchyResource Name Value Range Interpretation Number of UsersInterpreting Number of Users Resource Name Value Interpretation Range Job QueuesInterpreting Job Queues Resource Name Filesystem Available SpaceFilesystem Available Space Creating System Resource Monitoring Requests 6Troubleshooting EMS Directories and Files Etc/opt/resmon/log Logging and tracing EMS LoggingEMS Tracing Performance Considerations System Performance IssuesNetwork Performance Issues Testing Monitor Requests Testing Disk Monitor RequestsTesting Cluster Monitor Requests Testing Network Monitor RequestsMaking Sure Monitors are Running Glossary Notiﬁcation See alert Glossary Glossary Index Index Index